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(1y) X

The takeout double is one of the oldest conventions. Most players bid naturally to the double. However, I suggest transfer advances at 3y+. This way, we can separate paths to suit games by strength and by length.

(1y) X -x < y < z
1zNAT NEG, 0–7, usually 4+#
1NTCONST, 8–10
2xNAT NEG, 0–9, usually 4+#
2y!RESP or FG or (INV, 4= suit with stopper)
2zMild INV, 8–12, 4+#
2NTINV, 11–12
3xINV, 10–12, 5+#
3yz!TRF INV+, 10+, 5+ next suit
3♠!Ask for stopper
(1M) X -
4m!Leaping Michaels, 5+OM, usually 5+#
4M!Leaping Michaels, 5+♦, 5+♣
4OMPRE, usually 7+#
5mPRE, 7+#
(1m) X -
4m!Leaping Michaels, 5+♠, 5+♥
4om!Leaping Michaels, 5+♠♥, usually 5+#
4MPRE, usually 7+#
5omPRE, 7+#